Physical, mechanical and dry sliding wear properties of an Al–Si–Mg–Ni–Cu alloy under different processing conditions

Abstract

Abstract In pressurized solidification, the air gap formation due to shrinkage eliminated and heat transfer and cooling rate increased considerably. This effect resulted in a significant microstructure refinement and improvements in the mechanical properties of castings. Pressure also affects the freezing temperature of the alloy. A new version of the Clausius–Clapeyron equation was proposed to determine the extra pressure-induced undercooling. The results showed that pressurized sample exhibit a much stronger tendency to return to its equilibrium state. Improvement the wear response of pressurized cast sample is another effect of applied pressure.